Function mdbx_replace_ex

pub unsafe extern "C" fn mdbx_replace_ex(
    txn: *mut MDBX_txn,
    dbi: MDBX_dbi,
    key: *const MDBX_val,
    new_data: *mut MDBX_val,
    old_data: *mut MDBX_val,
    flags: MDBX_put_flags_t,
    preserver: MDBX_preserve_func,
    preserver_context: *mut c_void,
) -> c_int